Alright, let's work through 4355 times 1245 step by step
4355 × 1245 = 1245 × (4355)
+ 1245 × 5 which equals 6225
+ 1245 × 50 what gives us 62250
+ 1245 × 300 yielding 373500
+ 1245 × 4000 which equals 4980000

= 5421975
